<p>The great white shark is one out of 18 different shark species that live in the Pacific Ocean off the coast of Oregon and Washington.</p>

ASTORIA There are not many animals on earth that can locate prey and track it down as well as a shark can. Amazing senses help sharks to find their prey; some sharks can hear prey in the water up to 3,000 feet away and can smell one part of blood in 100 million parts of water. They are sensitive to everything that is going on in the water around them.

Join the Columbia River Maritime Museum for its next Science on Tap: Sharks of the Pacific Northwest, on Thursday, April 4. Greg Harris will put human perception at ease about the inaccurately portrayed maneating killers. With over 120 species of sharks currently listed as threatened or endangered, learn about the 18 species of sharks common to the Pacific Northwest, the latest research in our region, and how we can get involved.

Harris is the executive director and lead researcher for the Northwest Shark Preservation Society. With a degree in environmental science and a minor in aquatic zoology, Harris started to learn about sharks as a child and now works to educate the public through speaking engagements and research material. He has been inducted into the American Elasmobranch Society, a nonprofit professional society devoted to the scientific study of living and fossil sharks, skates, rays and chimaeras.

Science on Tap, in partnership with Fort George Brewery, is a Columbia River Maritime Museum program introducing maritime science, history and technology in an informal setting. This program is free and open to the public, minors are allowed with an adult. Doors open at 6 p.m., the presentation begins at 7 p.m. at Fort George Brewerys Lovell Showroom. Seasonal beers are on tap, and food and other beverages are available for purchase. For more information call 503-325-2323